Search alternatives:
"primary four" » "primary five" (Expand Search)
"primary user" » "primary six" (Expand Search)
"primary four" » "primary five" (Expand Search)
"primary user" » "primary six" (Expand Search)
-
1
Correlates of self-concept of primary four and primary six Malay pupils in Singapore
Published 2009“…This research study investigated the relationship between self-concept and academic achievement among Primary 4 and Primary 6 Malay pupils in Singapore. …”
Get full text
Thesis -
2
Spectrum sensing based on deep learning with fading channels
Published 2024Subjects: Get full text
Thesis-Master by Coursework -
3
A fast sensing algorithm for spectrum detection in cognitive radios
Published 2012“…The performance of a cognitive radio system depends on how well it can maximize the usage of a vacant frequency band without causing any interference to the licensed user, also called the primary user. Thus the ability to detect a primary user as well as to avoid any false alarm is of paramount importance for such a system. …”
Get full text
Thesis -
4
Advanced spectrum sensing for cognitive radio
Published 2012“…Spectrum sensing, which is the key enabling feature in CR technique, fully exploits the under-utilized licensed spectrum bands by constantly searching for unoccupied frequency bands and frequently sensing, analyzing and identifying the presence of primary users. To avoid interference to licensed users, the CR network should vacate the band whenever the primary user becomes active.…”
Get full text
Final Year Project (FYP) -
5
AR card game design & implementation
Published 2021“…For this reason, the application hopes to attract young people, such as teens and young adults, as the primary user demographic of the existing CCG community. …”
Get full text
Final Year Project (FYP) -
6
Signal processing for cooperative cognitive radio networks
Published 2017“…Although the analyzed period might be very short, it is most likely that the status of the primary user alters during the duration. This situation affects performance of the system due to higher uncertainty on the activity of the primary user. …”
Get full text
Thesis -
7
Cooperative spectrum sensing in a medium-traffic primary network using double-threshold scheme over imperfect reporting channels
Published 2015“…The status of a primary user (PU) within sensing time is one of the important parameters, which is considered to be fixed in many studies of spectrum sensing in cognitive radio networks. …”
Get full text
Get full text
Conference Paper -
8
Cooperative spectrum sensing using energy detection in cognitive radio technology
Published 2010“…This research study focuses on the energy detector based sensing technique which requires no prior knowledge about primary user‟s signals. First, a theoretical framework is developed and performance metric is valued for energy detector based spectrum sensing system; second, a closed form solution for local optimal detection threshold for secondary users is derived. …”
Get full text
Final Year Project (FYP) -
9
Automatic modulation classification of higher order QAM signals
Published 2011“…In cognitive radios, in order to efficiently use of spectrum resources, secondary users sense and share the spectrum with the legacy licensed primary users. Without reliable spectrum sensing, secondary users can cause unintentional interference to the primary user or other secondary users. …”
Get full text
Final Year Project (FYP) -
10
Learning Temporal–Spatial Spectrum Reuse
Published 2017“…We formulate and study a multi-user multi-armed bandit problem that exploits the temporal-spatial opportunistic spectrum access (OSA) of primary user channels, so that secondary users (SUs) who do not interfere with each other can make use of the same PU channel. …”
Get full text
Get full text
Journal Article -
11
Physical layer algorithms and architectures for accurate detection and classification in cognitive radios
Published 2014“…It is a conscious radio, which opportunistically uses the spectrum of a licensed user known as primary user (PU) while causing minimal interference to them. …”
Get full text
Thesis -
12
Optimization of cognitive radio systems with energy harvesting
Published 2017“…It senses the licensed spectrum and identifies spectrum opportunities which can be utilized by the secondary users (SUs) without disrupting the primary user (PU) transmission. Hence, it improves the spectrum efficiency by opportunistic spectrum access. …”
Get full text
Thesis -
13
Immediate test or delayed test : evidence of primary Mathematics learning
Published 2020“…The findings also showed that there was no superiority of delayed testing over immediate testing for the group of primary 4 participants which is contrary to the initial expectations. …”
Get full text
Final Year Project (FYP) -
14
An auction approach for resource allocation in cognitive radio networks
Published 2016“…We aim to solve the shortage of radio frequency spectrum via better practical utilisation and distribution of existing spectrum through an auction-based approach system where primary users (government licensed entities) leash unused frequency bands to secondary users (non-government licensed entities) .In an ideal dynamic cognitive radio network, primary users (PU) can share and rent their own licensed frequency spectrum to secondary users (SU) without restriction. …”
Get full text
Final Year Project (FYP) -
15
Medium access control for dynamic spectrum access in cognitive radio networks : analysis under uncertainty
Published 2013“…Medium Access Control is an important component in cognitive radio that allow secondary users to identify and access spectrum opportunity without interfering with primary users. In this paper, a queueing model to analyze the performances of the secondary users in a cognitive radio network is presented. …”
Get full text
Get full text
Journal Article -
16
Cluster based power efficient cooperative spectrum sensing under reduced bandwidth using location information
Published 2013“…Frequency spectrum sharing between licensed primary users (PUs) and unlicensed secondary users (SUs) requires the SUs to reliably detect the spectrum occupancy. …”
Get full text
Get full text
Journal Article -
17
Spectrum sensing under distribution uncertainty in cognitive radio networks
Published 2013“…The successful coexistence of cognitive radio systems with licensed system requires the secondary users the capability of interference-awareness, i.e., knowing which spectrum bands are occupied by primary users, i.e., the legacy users. Spectrum sensing thus is a key enabling module, which usually models the sensing process as a binary hypothesis testing assuming known signal distribution. …”
Get full text
Get full text
Conference Paper -
18
On-demand spectrum sharing by flexible time-slotted cognitive radio networks
Published 2013“…The secondary users (SUs) can share the spectrum resource with primary users (PUs) in a cooperative manner, where PUs trade their information and surplus resource, and SUs access the primary spectrum intelligently based on SUs' heterogeneous demands and PUs' resource prices. …”
Get full text
Get full text
Conference Paper -
19
Distributed decisions on TV spectrum allocation considering spatial and temporal variation
Published 2018“…However, unlike Wi-Fi bands, TV spectrum is subjected to high spatial and temporal variations due to the random arrivals and departures of primary users (PUs), which results in new technical challenges in TV spectrum utilization. …”
Get full text
Get full text
Journal Article -
20
Cognitive radio for enhancing spectral efficiency over wireless communications
Published 2024“…By considering the standalone sensing and cooperative sensing, the research explores algorithms to maximize spectrum efficiency while ensuring the protection of primary users' signals. Through systematic experimentation and analysis, the study evaluates the performance of various spectrum sensing techniques, considering factors such as variable parameters and the number of sensing samples. …”
Get full text
Thesis-Master by Coursework